CVE-2026-31828
LDAP Injection in Parse Server LDAP Adapter Enables Privilege Escalation
Publication date: 2026-03-10
Last updated on: 2026-03-11
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| parseplatform | parse-server | to 8.6.26 (exc) |
| parseplatform | parse-server | 9.5.2 |
| parseplatform | parse-server | 9.5.2 |
| parseplatform | parse-server | 9.5.2 |
| parseplatform | parse-server | 9.5.2 |
| parseplatform | parse-server | 9.5.2 |
| parseplatform | parse-server | 9.5.2 |
| parseplatform | parse-server | 9.5.2 |
| parseplatform | parse-server | 9.5.2 |
| parseplatform | parse-server | 9.5.2 |
| parseplatform | parse-server | 9.5.2 |
| parseplatform | parse-server | 9.5.2 |
| parseplatform | parse-server | 9.5.2 |
| parseplatform | parse-server | From 9.0.0 (inc) to 9.5.2 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-90 | The product constructs all or part of an LDAP query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended LDAP query when it is sent to a downstream component. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability affects the LDAP authentication adapter in Parse Server versions prior to 9.5.2-alpha.13 and 8.6.26. It is an LDAP injection issue where user-supplied input (authData.id) is directly inserted into LDAP Distinguished Names (DN) and group search filters without properly escaping special characters.
Because of this, an attacker who already has valid LDAP credentials can manipulate the LDAP bind DN structure and bypass group membership checks.
This allows privilege escalation from any authenticated LDAP user to a member of any restricted group, potentially gaining unauthorized access.
How can this vulnerability impact me? :
The vulnerability allows an attacker with valid LDAP credentials to escalate their privileges by bypassing group membership restrictions.
This means an attacker could gain unauthorized access to restricted groups and resources within the Parse Server deployment.
Such unauthorized access could lead to data exposure, modification, or other security breaches depending on the permissions of the escalated groups.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should upgrade your Parse Server deployment to version 9.5.2-alpha.13 or later, or 8.6.26 or later, where the LDAP authentication adapter vulnerability is fixed.
This vulnerability affects deployments using the LDAP authentication adapter with group-based access control, so ensuring you are running a fixed version will prevent attackers from manipulating LDAP Distinguished Names and bypassing group membership checks.